Question: Solve using calculus concepts. Answer is 4x8m, I just need help getting there. 4. A rectangular pigpen will be surrounded by a fence and then
Solve using calculus concepts. Answer is 4x8m, I just need help getting there.

4. A rectangular pigpen will be surrounded by a fence and then divided into two sections by a block wall. The area of the pigpen must be 32 ma. Fencing cost $20/m and the block wall costs $40/m. What should be the dimensions of the pigpen to minimize costs
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